140 Proceedings of the Royal Irish Academy/, 
167. T Delphtni. (Baxendell's S Delphini.) — Scliinidt observed a 
maximam, 1883, October 1 (mag. 8*4). Baxendell observed a maxi- 
mum, 1885, August 8 (mag. 10*1) — the lowest maximum mag. lie had 
ever observed. A maximum was observed by Knott, 1885, August 17 
(mag. 10-3); and by Baxendell, 1886, July 1. 
IQla. — Delphini = DM 17°, 4401 = Birmingham, 569.— Variation 
discovered by Espin, and confirmed by Gore. It was rated 6*8 m. by 
Argelander; 8 m. by d' Arrest, 1874, September 10. IS'ot in Lalande's 
Catalogue; 8m., Harding; 6-7, Heis. Variation was suspected by 
d'An-est. Espin estimated it 7*5, on June 28, 1884; and 6*3, on 
July 23. My observations from September, 1884, to January, 1887 
(66 in number), show a variation from 6*4 m. to 7'3m., with maxima, 
1884, December 14, and 1885, IS'ovember 9 ± ; and minima, about 1884, 
October 22; 1885, September 30, December 28; and 1886, August 
29 ±, with a period of perhaps 111 ± days. 
169. T CTGHiTi. — Sawyer found the variation very small in the year 
1884. Bumham found a 12 mag. companion at 10" distant. 
170 a. — Vttlpecul^ = DM + 27°, 3890. — An interesting variable 
of short period, discovered by Sawyer. The star lies closely np 32 
Vulpeculae. Erom observations in 1885-6, Chandler finds the follow- 
ing elements : — 
Max. = 1885, ITovember, 2-8576 G. M. T. + 4''-4368 E. 
The duration of increase is 1*060 days, and that of decrease, 3*377 
days. 
N'o. 170 J. — Cygni. — A variable of the rare type of Algol, dis- 
covered by Chandler, in 1886, while using it as a comparison star for 
1^0. 166 a. He gives the following elements : — 
Min. = 1886, Dec. 9^1 22«^, Cambridge (U. S. A.) M. T. + 2<^23'^56«'-0. 
{Govild.^ s Astronomical Journal, IS'o. 150). 
1^0. 171. E VuLPECUL^. — Knott observed a maximum of 8*2 m. on 
July 20, 1885, or forty- seven days later than the calculated date of 
maximum. 
1^0. 173. — Capeicoeni.— This star lies 9|-' due south of x (25) 
Capricorni. 
"No. 174. 63 Cygni. — Pickering considers the variability of this star 
doubtful. 
